JEE Main exam 2020 answer key likely to be released soon at jeemain.nta.nic.in: How to check
JEE Main exam 2020: The wait is over! The National Testing Agency (NTA) will be releasing the official JEE Main Exam 2020 answer key soon on the official website —jeemain.nta.nic.in. This will allow students to download the answer key and check how many questions they had answered correctly.
After the declaration of results, The Joint Seat Allocation Authority (JoSAA) will start JEE Main counselling. Source - PTI.